Cylinder lock



April I947. DUCEY 2,419,013

GYLINDER LOOK Filed Aug. 3,,1945

Patented Apr. 15, 1947 FUNITED STAIES' PATENT OFFICE Roger .H. Dncey, Belmont, Mass. Application August 3, 1945, Serial No. 608,659 I 1 Claim.

This invention relates to improvements in looks :and the object of the invention is to provide a cylindr type look of simple and inexpensive construction of greater safety than has heretofore been produoed.

. Usual looks are provided with a spring which 'holds the bolt or latch of the look in position to be engaged by a key or in case of cylinder looks with a cam or other actuating device seoured to the rotatable barre] of the cylinder which, when the key is inserted and the barrel rotated, will cause the bolt or latoh to be moved to or from 'lockingposition aooording to the character of the look. Such springs are likely to break or to become ineffective after long use. One of theobjects of theinvention is .to provide a look which will not require use of a spring of this oharaoter' and in whioh means integral 'with the barre] et the cylinder look is adapted to be.moved upon rotation of the barre] direotly into linterengagement with the complementary looking member'upou a relatively movable member adapted to be united thereto. Usual looks are so construoted as to enable the key to be removed when the barrel of the oylinder 'is either in looked position or in unlooked posi tion. One of the objects of th invention is to pro' vide means for preventing the key from being ,removed from the look when the barrel of the look is rotated to unlooking position.

A.further object of the invention is to provide a construction in whioh the invention may be mbodied in various forms of looks suoh, for example, as those which look together two relatively sliding members, or members one of which lswings relatively to a stationary member, in other words, to provide a look of universal adaptation.

These and other chicots and features of the invention will more fully appear from the followling description and th acoompanying .drawing andwill be particularly pointed out in the claim.

Preierred embodiments of the inverition...re gillstrated in the aocomrbanyixxg drawing, in ,vvhich,

. Fig. 1 is a view partially in horizontal section for 1initing two relatively sliding .members, such as slidlng doors, or for 'lockirig the sliding'd0or to a 'stationary door trame; V 1 Fig; 2 is a side elevation of the saine;* "Fig. 3 is a view mainly in horizontal section illustrating a pivotal latoh type which is adapted tdb applied either to relativel sliding members br t-members one of Whioh is hinged;

Fig. 4 is a view of the construction illustrated 2 in Fig. 3 showing one of the members in section and.illustrating in full fines the latoh in looking position and in dotted lines the latch in released position; A Fig. 5 is a view partiallyin vertical section; 0f a padlook embodying the invention in whioh th hasp member is in unlooked position;

Fig. 6 is a detail view partially in vertical sec-- Fig. 5

der look, and illustrating complementary parallel slots in the barrel of the look adapted to enter the reoesses in the complementary looking mem:

ber;

. Fig. 10 is a view of a cap adapted to be applied to the head of the oylinder look to prevent en- -tranoe of water into the keyhole of the look; and.

Fig. 11 is a detail view of the body of the 1901; .illustrating the rotatable barrel of the look, .tl;e oomplementary pins which are actuated by the key in looked position, and showing in dotted position the construction whioh will prevent removal of the key when. the barre] is rotated to lookreleasing position.

The construction illustrated in Figs. land 2 shows the embodiment of the invention in a construction in Which the members to be;lookd are adapted to be moved relatively .end to end 9r edge to edge as, for example, sliding doors' or a. jsliding door movable into engagement With a door frame. In this construction one of the members, such as a door or door frame l, has fixedly seoured to its edge an angle plate one member or 'flange 2 of whioh is seoured by sorews 3 tothfia edge of (me of the doors or'to th,doo i* jamli. The other member or flange {lof the angle plateis "provided With a cylindrical aperture 5 .atja dis; tance from'its edge and a relatively narrow slotfi6 leads from said edge to the cylindrioal aperture. The oomplementary .looking member, which is 'mounted in theotherrlatively mvablezmembgar l suoh as a door; comprises a generally'cy n ir cal body or oasing 8 opposite sides of whioh ar' e slabbed off to provide parallelwalls 9 and w adapted to fit within a sboket I I in the membr 1 and which when inserted in 'the niembr l'vill prevent rotation of the body by reason of the -ei1gagemeanfl. of thawalls 9and llflwith-th'aallel wallsof the sooket, The body 8 is provided with an enlarged integral fiange l2 adapted to be countersunk into the member 1 with the outer face thereof flush with the outer face of the member I. The flange l2 is provided with an integral boss [3 which is engaged by a screw I the head l5 of which is oountesunk into the member 1.

The look, which is of the cylindrical tumbler look type, comprises a oylindrical barrel l6 which is rotatably mounted in the body 8 and extends beyond the flanged end l2 of the casing, and is provided with an enlarged head Il which desirably has an outwardly conical edge |8. The.

barrel l5 is provided intermediate cf the"flange l2 of the body and the head Il of-thei cylinderl 4 cylindrical surface of the body that the key cannot be withdrawn. This construction is common to all the species of looks illustrated in the accompanying drawing.

The construction shown in Figs. 3 and 4 comprises a looking device which is adapted either to relatively sliding door members or to a swinging door. In this construction the stationary member 24, such as a door frame or jamb, is pro vided with a recess or socket 25 having secured over it a plate 25 having aslot 2! which terminates short of the bottom of the recess or socket providing a ledge 28 adapted to be engaged by a seourd to its inner end a latch 29 having a hockshaped .end.".30 adapted to engage the ledge 28 allel with the walls of the keyhole2 adapted and-purposes integral with the barrel of the look.

slidably to fit within the groove 6 in the fiange 4 of the complementary locking member. When the door members I and 1 are moved to abutting t ositicn the slots l9 Will permit the barrel to be inoved through the slot 6 in the fiange 4 of the cOmpleinentary member into registry with the slot6 in the fiange 4 of the complementary member and then rotated a quarter turn to a position in which the grooves l9 are at right angles to the slot 6, thereby preventing withdrawal of the barrel of the look through the slot 6 as illustrated in Fig. 2.

.One of the objects of the stated is to provide means for preventing removal of the key from the look unless the barrel is rotated t0 locking position. In the construction .shown in Figs. 1 and 2 the key can be withdrawn from the look only When the parallel grooves 19 are .at right angles to' the slot -6, or When the relatively movable members have been separated sufiiciently to withdraw the barrel of the look through the slot 6 and the barrel, again rotated to locking position at right angles to the position in which the barrel enters the slot 6.

' The construction of the look to aocomplish this purpose is similar to that of an ordinary cylinder look with the exception that the oomplementary pins or tumblers which are operated by the insertion of the key to permit rotation of the barrel are so oonstructed that When the barrel is rotated the pins, which are in the barrel, are so held in engagement with the notches of the key as to prevent withdrawal of the key.

In usual. cylinder look constructions the barrel IB of the look is provided with one or preferably several cylindrical tumblers or pins 2l having rounded or conoidal tips adapted to be engaged by the key When it is inserted in the look and a lik series of pins or tumblers 22, which are mounted in the body of the look in alinement with the pins in the look. The pins 22 are each baoked by a spring 23 which normally forces them and the pins into oonioal sookets in the keyway of the look, soma or all of the pins 22 thon extending into the barrel of the look. .Upon insertion of the key the pins 2l are foroed lon- .gitudinally radially of the cylinder to raise the pins 22 over the crests between the notches of the' key and then the respective pins 2! are rel can be rotated. 1 In the present construction one or more of the cylinder pins are of such length that Wl 1en the Lbarrel is rotated by the key the outer ends of the barrel pins so nearly engage the surround ng invention as above In this construction as in that previously described the key can only be inserted When the latch..is.positioned for looking engagement with the ledge 28 and the key can .onlybe rmoved when the relatively movable members are locked togethor. 1

In order to enable the assembled look to be in serted in a door the edge of the door may be provided with asuitable slot 3! preferably ata suitable angle to the horiZontal throuh which the latoh 29 may be inserted laterally and a suitable reoessed plate 32 thereaiter countersunk in the edee of the door t0 overlie the slot 3l.

The construction shown in Figs. 5-8 show the invention as applied to a padlock. In this. construction the padlock. comprises a solid floody 33 and as illustrated is of transverse elliptic'al cross section but of course may be of any desired shape ahdzis provided with a longitudinal gner.lly oylindrioal bore having opposite fiat walls into which the slabbed cylinder, 34 of the look fits. The rotatable barrel of the look and the keyoperated mechanism is' thesame as that hertO fore described. In this construction the oylindr is provided at its outer end with an integralinwardly converging oonoidal head 35 and the'barrel of the cylinder welded orotherwise fixedly secured thereto an ecoentric disk 35. The end portion of the body 33 is providedwith a bore 31 which is eccentric to the axis of the .rotatable barrel of the look to receive the end ofone'leg of a U-shaped hasp. The same end of the body 33 is also providedwith a bore 38 diametrically opposite to the bore 31 to receive the other longer leg 39 01 the U:shaped hasp which has at its end a head 46 which slidably fits the bore 38.1 A cap 4l complementary to and registering with the body 33 approximately on the seotion line 'l1 Fig. 5 is provided with a abore 42 which registers with the bore 33 and extends upwardly approximately to the upper surface of the cap. The cap has also a bore 43 through which the other leg 44 of the hasp may 'be inserted into the bore 31. The cap is provided with a lateral recess 45 to receive the eocentric disk 36 upon the end of the barre]. The cap thus constructed may be we lded or otherwise fixedly secured to the body of the look upon assemblage of the look in suoh manner as to prevent its detachment therefrom. A spring 4, whichis interposed betweenthe head 4!) of*the hasp and the. end wall of,the bore 4 2, normally tends to orce the 16g 44 of the.hap into the bore 43-and the countersink 31. The hasp is providedvith aslot or notch 41 adapted -to floe engaged by the eocentric.disk 36 upon rotation of the disk to locking position illustrated in The operation of the lock is similar to that heretofore described, and is such that when the disk 36 isi*otated to locking position illustrated in Fig. 6 the key can be removed from the lock, but when the barre] of the lock is rotated by the key in 3, direction to disengage the eccentric 36 from the notch 47 the key cannot be withdrawn from the lock. By reason of this construction a padlock is provided in which the hasp normally tends to return to 1ocking position to be engaged by the eccentric 36.

When it is desired to lock two relatively movable members together the hasp is rotated about the axis of the leg 39 so that the leg 44 extends 1beyona the side of the body whereupon it can oe inserted through the staple of a pair of complementary locking members, then swung into alinement With the bore 43, whereupon the spring 46 Wi1l force the leg 44 into locking position so that the eccentric disk 36 may -be moved into engagement with the notch 41 on the 1eg 44 by rotation of the key in a proper direction. When thus locked the key can be withdrawn.

When it is desired to remove the padlock the key may be rotated in the opposite direction to remove the eccentric disk 36 from engagement with the notch 41 and bypulling upon the body of the lock it can be rotated about the axis of the 1eg 39 in such manner as to permit the hasp to be withdrawn from the staple or other mem:ber to which the lock is secured. Upon rotation 01 the hasp about the axis of its leg 39 the leg 44 will be brought into registry with the bore 43 in the head and the hasp returned to locking position so that the key can be rotated in 2, direction to permit its removal from the lock. If, however, the hasp is not rotated into alinement with the bore 43 in the head the key can still be removed by rotating the disk 36 to 1ocking position, in which case the leg 44 of the hasp cannot be inserted into locking position.

In order to prevent the entry of water, dust, etc. into the keyhole of the lock illustratea in Figs. 14 inclusive a suitable cap in the form of a disk 48 is provided With inwardly extending spring tangs 49 which may be snapped over the conical head of the barrel.

Looks of this character are adapted to be provided With numerous combinations of tumbler pins and keys respectively therefor so that a multitude of difizerent looks with a suitable key for each may be provided.

By reason of the present invention a lock of simple construction may be made at a relatively low cost which W111 be certain of operation indefinite1y. As a matter of fact a dr lock construction embodying the invention can be produced in which the Complementary pins or tumblers of the lock are arransed vertically and the usual spring for forcing the pins in the bod of the lock actuated by gravity thereb enabling' the omission of the springs 23 thus providing an entire1 springless lock.

It will be understood that the particular embodiments of the invention shown and described herein are of an illustrative character and not restrictive of the meaning and scope of the claim.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

A sliding door lock for releasabiy securing together two relatively slidable members when in edge to edge abutting position comprising an angle plate having a flange secured to the edge of.one of said members and another fiange extending outwardly therefrom provided with a slot leading to a circular recess of greater diameter than the width of said slot. a look body embedded in and fixedly secured to the other door member having a key-operable cylindrical tumbler controlled barre] provided with oppositely disposed narrow slots parallel to the keyhole slidably to fit within the slot in said angle plate, when said members are moved to abutting position, With a cylindrica1 barrel registering with said circular recess and operable upon rotation of the key to position the slots in the barre] transversely of the 5101: in the angle plate thereby to prevent withdrawal of the barrel through said slot, and means for preventing withdrawal of the key when the barrel is rotated to lock-releasing position.

ROGER H. DUCEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number 

